The utility of multiple discriminant function analysis (MDFA) to differentiate among the interest patterns of engineers was examined. Subjects were 229 engineers who were administered the Strong Vocational Interest Blank (SVIB) in 1935 as college freshmen (1935 FR) and again in 1966, and 210 freshmen who completed the SVIB in 1966 and had persisted in an engineering curriculum for two years (1966 FR). Two MDFA analyses were conducted and cross-validated. Statistically significant profile differences were found. 1935 FR preferred occupations which involved the technical application of knowledge. In 1966, their preferences included managerial endeavors. 1966 FR responses were congruent with those of men in occupations requiring sophisticated quantitative and research skills. They exhibited more interest in management and business than did their predecessors as freshmen. These findings provided a basis for career counseling inferences with prospective engineers and attested to the value of MDFA for research of this type. (Author)